KR19990056110A - How to prevent the power consumption of the keyphone phone subscribed to the keyphone system - Google Patents

Abstract

The present invention relates to a method for preventing power consumption of a key telephone connected to a key telephone system, and more particularly, to a method for preventing power consumption by turning off all the LEDs of an unused key phone .

According to another aspect of the present invention, there is provided a method of preventing power consumption by using an LED of a key telephone in a key telephone system having a plurality of key telephone sets, the method comprising the steps of: And the LED of the key telephone is turned off until it is determined that there is a key input operation and a hook-switch operation in the key telephone.

Description

How to prevent the power consumption of the keyphone phone subscribed to the keyphone system

The present invention relates to a method for preventing power consumption of a key telephone connected to a key telephone system, and more particularly, to a method for preventing power consumption by turning off all the LEDs of an unused key phone .

Most of the companies or offices these days have a key telephone system installed and operated. In addition to such a key telephone system, there is a private branch exchanger that performs similar functions. The key telephone system performs a function of connecting a local line and an extension line by a telephone line (usually called a local line) between the local exchange facility and the affiliate switching center, and the key telephone system performs efficient business processing It became an indispensable device.

In the meantime, the key telephone of the subscriber who is subscribed to the key telephone system as described above uses a plurality of extension subscribers each having an extension number. Also, the key telephone provides a call to the user, i.e., the subscriber, and various other call processing services. Therefore, users frequently use the key telephone.

However, there are cases where the user of the key telephone is absent for a long time or does not use the key telephone for other reasons. At this time, the key telephone is in a state capable of performing various operations under the control of the key telephone system. At this time, since the system is controlled by the system even though the key telephone is not used, the LED indicating the line status with the system provided in the key telephone becomes blinking or lighted continuously. The flickering or lightening operation of the LED is useful information to the user only when the key telephone is used, but when the user does not use the key, the power consumption of the telephone is consumed. That is, even when the user is absent or does not use the key telephone for a long time, power consumption continues to occur because the key telephone continues to operate under the control of the system, and in particular, Which causes power consumption.

This may place a burden on the power source of the key phone system, resulting in a waste of unnecessary power.

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Accordingly, it is an object of the present invention to provide a method of preventing power consumption by turning off all the LEDs of an unused key telephone while the LEDs are turned on and off.

In order to achieve the above object, the present invention provides a method of preventing power consumption by using an LED of a key telephone in a key telephone system to which a plurality of key telephone sets are connected, the method comprising: A method of turning off the LED of the key telephone is performed until it is determined that there is a key input operation and a hook-switch operation in the key telephone, if it is determined that there is a key telephone in which the switch operation is not performed for a predetermined time .

1 is a block diagram of a conventional keyphone system in which the present invention is implemented;

2 is a block diagram of a key telephone connected to a key telephone system in which the present invention is performed;

FIG. 3 is a flowchart illustrating a method of preventing power consumption of a telephone key telephone according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Components and functions used in the present invention will also be omitted. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

1 is a block diagram of a conventional keyphone system in which the present invention is performed.

Referring to FIG. 1, the central processing unit 100 processes a preset program to control a call switch, and controls various services and operations according to the present invention. A RAM (Random Access Memory) 110 has a program and volatile data processing area, and is composed of a plurality of various buffers and is used as a work memory of the central processing unit 100. ROM 120 includes a control program for performing call and call waiting functions. Under the control of the central processing unit 100, the switching circuit 130 switches various tone and voice data, connection between extensions, connection of a trunk line, and the like. The general subscriber circuit 140 performs interfacing between a general telephone set of a plurality of subscribers and the apparatus. The ring generator 150 outputs a ring signal in the form of a square wave to the general subscriber circuit 140. The key phone subscriber circuit 160 performs interfacing between a plurality of key telephone sets and a device. At this time, the key telephone includes a predetermined display unit so that the subscriber can know the overall operation state of the system, the input telephone number, and the like. The tone generator 170 is controlled by the central processing unit 100 and forms a trunk loop by visualizing the trunk line. In addition, an incoming signal received through the CO is interfaced. The DTMF receiver 190 analyzes the DTMF signal generated from the subscriber of the general subscriber circuit 140. On the other hand, the DTMF transmitter 200 outputs the DTMF signal to the switching circuit 130 under the control of the central processing unit 100. The clock circuit 105 also has a timer function for providing a clock function to the central processing unit 100 and for counting other predetermined times.

FIG. 2 is a block diagram of a key telephone connected to the key telephone subscriber circuit 160 in the key telephone system in which the present invention is implemented, adopting a digital telephone system.

Referring to FIG. 1, the transmitter 220 serves as a keyphone subscriber circuit 160, which is a terminal matching unit of the keyphone system, and a transmission window of the key phone. For example, the TCM 2B + D transmission mode, the AMI CORDER function, the digital PLL function, and the interface with the control unit are performed. The power supply unit 280 receives power from the key phone system through a cable that is connected to the transmission unit 220, converts the power, and supplies the converted power to the key phone. The main control unit 210 controls all the parts of the key telephone, and is usually implemented as a one-chip microcomputer. A key input KEY and a red LED 250 detect input key data and turn on / off a red LED, that is, a part for performing lighting operation, flashing, and off operation of the LED. The call interface unit 230 functions to digitize an analog voice signal input to the key telephone through a handset or a microphone. And a function of converting the digital signal input through the transmission unit 220 to analog and outputting the digital signal to a speaker or a handset. This includes a multifunctional codec (CODEC) and a ring volume level adjuster. The LCD unit 260 serves as a display unit for displaying the status of the key telephone. A CHANNEL extension unit 240 is a part for expanding the 1B of the 2B + D channels received from the transmission unit 220 to the key telephone through the KDB-D or KDB-S module.

FIG. 3 is a flowchart illustrating a method of preventing power consumption of a key telephone according to the present invention, and is a flowchart illustrating a method of turning off an LED of a key telephone that is not used for a predetermined time.

3 is programmed and stored in the ROM 120 of the keyphone system shown in FIG. 1, and the operation is performed by the central processing unit 100. FIG.

Referring to FIG. 3, in step 300, the central processing unit 100 performs an operation of checking the status of the key telephone connected to the key telephone system. That is, the mode is for entering the mode for detecting the use state of the key telephone. In step 310, it is determined whether there is a key input through a key button implemented in the KEY & LED unit 250 of the key phone. If it is determined in step 310 that there is no key input, it is determined in step 320 whether there is a hook-switch operation in the key phone. That is, the key telephone user checks whether the handset is lifted or keyed in for performing a call and other functions. If it is determined in step 320 that there is no hook-switch operation, the timer is operated by the clock circuit 105 in step 330. The timer is set and stored at an appropriate time by the system manufacturer or administrator as necessary. This is a time when the user does not use the mobile phone for a certain period of time, which is a criterion for recognizing the mobile phone as an unused key phone. Accordingly, it is determined in step 340 whether or not a predetermined time N has passed by the timer operation. That is, it is determined whether the N time has been counted. If it is determined in step 340 that the predetermined time N has elapsed, that is, if it is determined that the key phone is not used for the designated time, And transmits an instruction to turn off the LED at 210. At this time, the main control unit 210 controls the LED provided in the KEY & LED unit 250 to turn off the LED that is on or off. This is to save power consumed in the key telephone by turning off the LED when there is no key input or the hook-switch operation is not for a predetermined time. In step 360, the timer is initialized, and the operation of step 300 is repeated. If it is determined in step 310 that there is a key input operation or if there is a hook-switch operation in step 320, the timer is initialized in step 315, and the corresponding operation is normally performed in step 325. At this time, the LED is turned on for operation requiring LED flashing, and the LED is turned on for operation requiring LED lighting. On the other hand, if it is determined that the time N designated in step 340 is not yet counted, the operation of step 300 is performed again. That is, the user continuously checks whether or not the key telephone is used during the counted time.

Meanwhile, although the timer operation is performed by the clock circuit 105 of the key phone system, the timer function can be performed not only by the key phone system but also by a clock function implemented in the main controller 210 of the key phone. Which may optionally be implemented by the manufacturer or implementer.

In addition, when the present invention is applied to a conventional keyphone system, a program of the operation memory implemented in the keyphone system may be partially modified and stored, or the operation memory may be replaced.

As described above, according to the present invention, when the key telephone is not used in the key telephone system, the LED of the key telephone can be turned off, thereby saving power consumed by the LED.

Further, in the application of the present invention, since the program can be changed in software, the program can be executed in a conventional keyphone system, which realizes an advantage of lowering the actual implementation cost.

Claims (3)

A method of preventing power consumption by using a red LED of a key telephone in a key telephone system having a plurality of key telephone sets, If it is determined that there is a key telephone in which the key input operation and the hook-switch operation among the plurality of key telephone sets are not performed for a predetermined time, until the key input operation and the hook- And turning off the red LED of the key telephone. A method of preventing power consumption of a telephone keyphone subscribed to a key telephone system, 1. A method of preventing power consumption by a red LED of a key phone telephone not used in a key telephone system in which a key telephone having a red (LED) driving function is used, Determining whether there is a key input operation or a hook-switch operation in the key telephone during checking the use state of the key telephone in the key telephone system; If it is determined that there is no key input operation or hook-switch operation, the timer included in the keyphone system counts a predetermined time, and the key input operation or the hook-switch operation Determining whether or not there is an error, And processing to turn off the red LED of the key phone when it is determined that there is no key input operation or hook-switch operation at the designated time period. How to prevent power consumption. 3. The method of claim 2, When the key telephone system determines that there is a key input operation or a hook-switch operation on the key telephone while checking the use state of the key telephone, or if the key input operation or the hook- Further comprising the step of processing the red LED provided in the key phone to perform a normal operation if it is determined that the key is operated.